On Sun, Jun 25, 2000 at 01:04:43PM +0100, Alan Cox wrote:
> > > sleeping in cleanup module
> > > open /dev/hda
> > > ????????
> >
> > Shouldn't be able to happen, because /dev/hda should not exist if the
> > module refcount is zero. Except for the register_netdevice problem.
>
> /dev/hda always exists
>
> The user is opening it so needs to load the module for it. The module for it
> is still being unloaded.
The clean solution is a read-write semaphore for the module list. For
unloading we grab the semaphore as a writer, insmod sleeps on it.
Actually, Rusty has been looking into that, and run into minor problems
which I'm sure he'll have solved RSN.
Philipp
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